MESON Chess Problem Database

Problem Display
PID: 109047 (8/8/3K4/3N4/B2p4/3k4/1R1p2P1/3R4 w - - 0 1)

Narraway, James Ephraim

Quebec Chronicle, 1888

8/8/3K4/3N4/B2p4/3k4/1R1p2P1/3R4

#2

6 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke2
      • 2.Rbxd2#
    • 1...Kc4
      • 2.Bb5#
  • Tries
    • 1.Kc5?
      • 1...Ke2
        • 2.Rbxd2#
      • 1...Ke4!
    • 1.Ke5?
      • threat
        • 2.Bb5#
      • 1...Ke2
        • 2.Rbxd2#
      • 1...Kc4!
    • 1.Kc6?
      • 1...Ke2
        • 2.Rbxd2#
      • 1...Kc4
        • 2.Bb5#
      • 1...Ke4!
    • 1.Bc2+?
      • 1...Kc4
        • 2.Rb4#
      • 1...Ke2!
    • 1.Bb3?
      • 1...Ke2
        • 2.Rbxd2#
      • 1...Ke4!
    • 1.Bc6?
      • 1...Ke2
        • 2.Rbxd2#
      • 1...Kc4
        • 2.Bb5#
      • 1...Ke4!
    • 1.Bd7?
      • 1...Ke2
        • 2.Rbxd2#
      • 1...Kc4
        • 2.Bb5#
      • 1...Ke4!
    • 1.Rdxd2+?
      • 1...Kc4
        • 2.Bb5#
        • 2.Rbc2#
        • 2.Rb4#
      • 1...Ke4!
    • 1.Rc2?
      • 1...Ke2
        • 2.Rcxd2#
      • 1...Ke4!
    • 1.Rbxd2+?
      • 1...Kc4
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rxd4#
      • 1...Ke4!
    • 1.Rb4?
      • 1...Ke4
        • 2.Bc2#
      • 1...Ke2!
  • Keys
    • 1.Be8!
      • 1...Ke2
        • 2.Rbxd2#
      • 1...Kc4
        • 2.Bb5#
      • 1...Ke4
        • 2.Bg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::R1(B),XP(a)
    • K(b);N_SPINP(a),S_FLIGHT::B(D)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::R1(B),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • K(F);S_FLIGHT
      • Threat
        • B(D)
      • Vars
        • K(b);S_FLIGHT::R1(B),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::R1(B),XP(a)
        • K(b);N_SPINP(a),S_FLIGHT::B(D)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::R1(B)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(b);S_FLIGHT::R1(B),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(b);S_FLIGHT::R1(B),XP(a)
        • K(b);N_SPINP(a),S_FLIGHT::B(D)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • B(D);
      • Vars
        • K(b);S_FLIGHT::R1(B),XP(a)
        • K(b);N_SPINP(a),S_FLIGHT::B(D)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • R(A);CHECK,XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(b);S_FLIGHT::R1(B),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • R(B);CHECK,XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(b);N_SPINP(a),P_SPINP(c),S_FLIGHT::B(D)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
  • Actual
    • B(D);
    • Vars
      • K(b);S_FLIGHT::R1(B),XP(a)
      • K(b);N_SPINP(a),S_FLIGHT::B(D)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).